I have the string of video time is "02:30" and video.duration of video is 239. Now, how to convert "02:30" to currentTime?
Use split(":") can solve that, i hope below will help you:
function convert(str){
let a = str.split(':')
return Number(a[0]) * 60 + Number(a[1])
}
const currentTime = convert('02:30')
console.log("currentTime is", currentTime)A one line solution
If you want a simple one line solution you could use Array.reduce. Note that split returns a string[2], but we convert these to numbers by applying math operators, for example +mm is shorthand for Number(mm). Also see MDN JavaScript arrow functions
let toMinutes = hhmm => hhmm.split(":").reduce((hh, mm) => +mm + 60 * hh );
Run the code snippet to view test output
let toMinutes = hhmm => hhmm.split(":").reduce((hh, mm) => +mm + 60 * hh );
// TEST
["00:30", "1:00", "01:15", "1:30", "01:45", "2:00", "2:15", "2:30", "2:45", "3:00", "24:00" ].forEach(t => {
console.log(`${t} = ${toMinutes(t)} minutes`)
});